Kidde Night Hawk Combination Smoke/CO Alarm w/Voice/Alarm Warning - Walmart.com
Nighthawk™ AC Plug-in Carbon Monoxide Alarm KN-COB-DP-LS | Kidde
Kidde Nighthawk Carbon Monoxide Detector, AC-Plug-in with Battery Backup, Digital Display, Pack of 2 & Smoke Detector, Battery Powered Smoke Alarm with Test Button, Battery Included,(Pack of 1) - Amazon.com
Kidde Nighthawk Carbon Monoxide Detector & Propane, Natural & Explosive Gas Detector, AC-Plug-in with Battery Backup, Digital Display, White & Smoke Detector, Battery Powered with Test Button - Amazon.com